Doffing mechanism of spinning, twisting, and like frames



. T. A. AND H. A,. BOYD. DOFFING MECHANISM OF SPINNING TWISTING, AN D LIKE FRAMES.

- APPLICATION FILED MAR 8. 1319.

-1,369,'613. Patented Feb. 22, 1 921.

I I w 3 'S HEETSSHEET l- 1 i i T T. A. AND H. A. BOYD.

DOFFING'MECHANISM'OF SPINNING, T-WISTING, AND LIKE FRAMES, APPLICATION FILED MAR 6, 1 919. v 1 369,61 Patented Feb. 22,1921.

3 SHEETSSHEET 2.

8 Memo dmafmwgdw Gay i T. A. AND :j B6 YDf DOFFING MECHANISM 0F.SPlNN|NG, TWISTING, AND LIKE FRAMES.

APPLICATION FILED MAR-3,1919- I 4 j5f j Patented Feb. 22,1921.

.3 SHEETS-SHEET a.

UNITD sra'r ,air oFFIC E-I THOMAS A. BOYD AND HAROLD A; BOYD, or eilaseow; SCOTLAND.

lnorriiver MECHANISM or SPINNING, TWISTING, Ann LIKE FRAMES.

of the King of Great Britain, and residents of Glasgow, Scotland, have invented certain new and useful Improvements in Doifiiig- Mechanism of Spinning,-Tw1sting, and" like Frames, of which the following is a specification.

' the purpose of a traverse shaft. According to this invention the dolfing shaft referred ing and like frames in which the builder rails and also the step rails if such be used' are lowered clear of the spinning spindles for the purpose of doiiiiig full bobbins from and placing empty bobbins upon the said spindles The primary object of our invention isto facilitate the lowering, raising and supporting of such rails and also to supporting ofthe spindle against the lateral pull of its driving band when the said railsare lowered to the builder rail and the step rails, when such are'used, are lowered and raised by a doliing shaft which in some cases also serves to is revolved in one direction to lower and in the opposite direction to raise the said builder rails, and also the said step rails if such be used, by means of power obtained from the main driving belt of the frame when the said belt has been shifted from the fast'to the loose pulley. The power is communicated' by means of friction driving pulleys or disks driven by the main driving 3 belt and communieatingmotion in one dif rection or another to a movable friction pulley which may be pressed against one of the said driving pulleys or the other, or held:

in a neutral position. The power from the said movable pulley is communicated to the dolfing shaft through a worm shaft and worm vwhich drive a worm wheel on the dotting shaft and which worm is adapted to l be'thrown into or out of mesh with the worm wheel when the said doffing shaft is used as a traverse shaft. Further, this invention includes an arrangement whereby v the chains which lower and raise the builder ,rails also raise the step rails when such are used.

step rails are used and arerai'sed to working position after dofling,there is provided Still further, for frames, ,in which for sustaining the step railsinposition and releasing them from that position a locking ALEXANDER 1 This invention relates tospinning, twist--' I Specification ofLetters Patent. is Patented Feb. 22, 1921. Application filed March 8,1919. Serial n. 281,533; V

arrangement passing from end to end ofthe frame so as to be operated from one or both ends of the frame. The inventionalso includes a spindle support located above the flier below the top spindle rail and behind the spindle, WVhen the la-teralspindle support in the'builder rail'or in the step rails is withdrawin'the spindle band draws the spindle against" the support mentioned, thus keeping the spindle sufficiently in central position to I dot-ling. V

Accompanying this specification are three sheets of drawing: Figures 1 and 1 show an end sectional view of the spindle rail,

" step and builder rail, dofiing shaft and friction disk for driving same, also cliainfor lifting and lowering: Fig. 2 back balance of step rail and step rail slide: 'Fig. '3 front receive the empty bobbin after h view showing driving pulleys, driving and back end frames, traverse motion, dotting shaft and means of operating same, "step rail socket andsupportbuilderrail slide: i 1g, l back end frame, traverse motion, pawl and ratchet'to operate doffing shaft for traverse: Fig. 5 end view driving end frame,

cut away to show worm and worm wheel for dofling shaft,worm bracket and tumbler to lower worm out of gear: Fig; 6- plan view of Fig. 5.

in a practical application of our .invention applied to a jute spinning frame Figs. 1 to 6 we mount on suitable. framing a top spindle rail 11 disposed horizontally and passing alongthe front; side of the "frame,-

a low' and atop stay rail 2 and 3, vertical guide rods 4, placed atf'a suitable distance 1 apart and supported on the low rail 2 and extending up to and supported by the top spindle rail 1. On the verticalguide rods t are sockets 5 each with knees eXtend-' ing to the front and carrying a steprail 6. On the front side of each step rail 61we mount in covers .7 a pair of builder slides 8 each having a horizontal limb 8 extending;

inward for connection with a builder lifting step rail 6., On/the upperiendof each builder slide 8 we 'mounta builder railll.

lel with the top spindle raill and at a suiteable distance be ow it, The said dofiing chain 9 hereafter described, {The lower end of each builder slide s vguided in a. guide bracket 10 bolted to th fl Sidepofthe 1p shaft 12 serves the double purpose of an oscillating traverse shaft to traverse the builder rails up and down and when disengaged from the traverse motion and geared to the lowering motion as'hereafter explained, as a doffing shaft for lowering and raising the builder rails and step rails. On the said dofiing shaft 12 opposite each builder slide we mount a builder chain pulley 13 with a builder chain 9 extendingdown to and fixed v to the horizontal limb 8 of the builder slide to operate the builder rail 11- during spinning'and also to lower the builder rail for dotting. In the horizontal limb 8 of-each builder slide 8 we mount vertically a lifting screw 14 which comes against the bottom of doiiin'g, as hereafter explained.

the step rail 6 and lifts thesaid rail after On the upp'er end of each vertical guide rod 4 we fbalance relief chain 19 extending to and connected with the step rail back balance weight 18.. During spinning, while the doff- 1 ing shaft 12 is traversing the builder rail 11 up and down, the balance relief chain 17 is V slack and inoperative.

' dofling shaft 12 is lowering the builder rail 11 for dofling, the balance relief chain 17 d When, however, the

raisesthe back balance weight 18 of the step rail 6 and thus facilitates the descent of the latter. During spinning the step rails 6 are sustained by a'locking bar 20 which is mounted on the low stay rail 2 and which is carried in guides 21 with friction pulleys 22 and can be freely slid endwise. On the'locking bar 20 we mount at each socket carrying a step rail a step rail support 23 projecting in front of the locking bar. On the said supports 23 the step rails 6 sit during spinning. At the driving end 24 of the frame we mount a treadle 25 with a back balance weight 26. On depression of the treadle 25 the locking bar 20 is drawn on end, carrying the step rail supports 23 from beneath the sockets 5 leaving the step rails 6 free to descend. The sockets 5 prevent the supports from getting back to normal position until they rise Itwill thus be understood that when the frame'is stopped for dofling and ithe doffing shaft 12 disengaged from the traverse motion as hereafter explained and i turned so as to lower the builder rails 11 the following results: The builder rails 11 1 are lowered on to the step rails 6; (I2) each of the step rails6 receiving the weight of the corresponding builder rail 11 and having its back balance weight 18 lifted by the dofling shaft descends (a) the full bobbins by their weight slide downward off the spinplace and the dofling shaft 12 reversed to lift the builder rails 11, which, by the lifting screws 14 described lift the'step rails 6 until they are high enough for their supports 23 to slide with the locking bar 20 below the sockets 5 of the step rails 6. The back balance weight 26 on the treadle 25 causes the locking bar 20 to move endwise automatically. In the top spindle rail 1 we mount at a suitable distance apart flier spindles 27 extending down to and supported in the step rails. The said spindles have each a wherve 27 with a lower flange fixed there- ,on below the top spindle rail 1 and are driven by a tape 28 from a tin roller 29 mounted on the frame behind, and parallel with, the top spindle rail. The spindles 27 v are supported when running laterally in the top spindle rail 1 and vertically and laterally by the step rails 6. When the step rails 6 are lowered the spindles 27 hang from the top spindle rail 1. On the spindles 27 we place ordinary spinning bobbins 30. 7 To keep the spindles27 in approximately vertical position when the step rails 6 and builder rails 11 are withdrawn for dofling, so' that the said spindles may enter the empty bobbins 30 and also enter the builder rails 11 and the steprails 6 when these are raised after dofing, we mount on the back ofthe top spindle rail 1 behind each spindle wherve 27 a support 31 which extends below the tape 28 and embraces the back of the lower flange of the wherve 27 thus the spindle is kept. in approximately vertical position as the wherveflange 27 is drawn against the support 31 referred to by the tape. The support 31 referred to-is just clear of the spindle wherve 27 when the spindle 27 is running so that the spindle is drawn slightly off its working position=by the tape when its lower support is withdrawn.

We shall now describe the manner in which the dofling shaft is disengaged from the traverse motion when it has to be used to lower the rails for dotting. At the back end38 of the frame we mount a heart cam 32, a heart cam vlever 33, and a chain 34 operating in the usual-manner. On the end of the dofflng shaft 12 we mount loosely a chain pulley 35 to receive the motion from the heart cam 32 by means of the heart cam lever 33 and chain 34. On the chain pulley 35 we mount a studand on it a pawl 36 which engages, with a ratchet wheel 37 keyed on the doiiing shaft 12"so that during spinning the dofiing shaft is oscillated by the traverse motion by means of the pawl 36 and ratchet wheel 37 described. When the pawl 36 islifted clear of the ratchet wheel asbefore stated, Qn the back end 38 of dles. Empty bobbins are then put in their the frame below the pawl 36 above men tioned we mount in a guide bracket 39 a vertical lifter rod 40 which extends downward to the step rail locking bar 20 on which we fix an inclined plane 41 so arranged that the sliding of the locking bar 20 to remove V the support 23 from the step rail 6 shall at the same time press the vertical lifter rod 40 upward and lift the pawl 36 out of engagement with the ratchet wheel 37.

- We shall now describe the means of revolving the clotting shaft 12 to lower and to raise the rails. On the doffing shaft we key a worm wheel 42 inside the driving end frame 24. On the underside of said worm wheel 42 we-mount movably on the framing a worm bracket 43, a worm 44, and a-worm shaft 45, the worm bracket and the worm shaft extending inward at right angles to the top spindle rail" 1 to a point below the driving shaft 46 of the frame, the driving shaft being carried 1n bearings on the fram- 1 ing and carr ing the tin roller 29 afore referred to. On the outside of the driving end frame 24 we mount on a stud 47 located behind and below the main driving shaft 46 a hand lever 48' which extends to and is supported in a catch 48 at the front of the driving end frame 24. On the hand lever '48 between its backand front supports we form a boss 48 carrying a cross shaft 49 disposed horizontal and parallel With the main driving shaft 46. On the in' ner end of the said boss 48 we mount pivot-.

ally the inner end 43 of the worm bracket 43 afore described. At the junction of the worm bracket 43 and the boss 48 of the hand lever 48 we mount a pair of miter wheels 50 and 50 one keyed on the worm shaft and the other on the cross shaft 49. On the outer end of the cross shaft 49 we fix a friction pulley 51 which, when driving in one direction or the other, drives the worm shaft 45 and worm 44 above mentioned so as to operate the dofling shaft 12. Below 7 46 we mount a pair of driving pulleys, the

fastpulley 53 on the outer end of the main shaft and the loose pulley 54 between the fast pulley and the shaft support onthe frame end. At the side of the loose pulley 54 next to the shaft support we fix an upper driving friction pulley 55 and on its side a spur wheel 56. On the main shaft support below the spur wheel 56 we mount upon a stud parallel with main shaft a lower driving friction pulley 57 with a spur wheel 58. Between the upper and lower driving friction pulleys we mount on a stud also carried on the main shaft support an intermediate spur wheel 59 so that when the frame is stopped for dofiing and the drivingbelt is shifted on to the-loose pulley 54 the loose pulley will drive the upper pulley '55 and lower driving friction pulley 57 which pulleys are'spaced vertically apart about one 3 'pulley- 55 when pressed upward against it and by the lower driving friction pulley 57 which acts on the inner'face of the projecting flange of the said driven friction pulley when it is pressed downward; The driven friction pulley thus remains stationary when held clear of the upper'55 and the lower '57 driving friction pulleys. It will thus be understood that when the frame is stopped for doifing and the driving belt is shifted from the fast pulley 53 to the loose pulley 54 the worker performs the following operations (1) By the operation of the tumbler cam lever 52 he raised.- the worm 44 into operative relation with the doffing shaft 12'; (2) he raises the driven friction pulley 51 to drive the dofling shaft 12 to lift the builder rails 11 slightly above their usual traversing'height and thus to take the weight of the step rails off their supports 23; (3) he depresses treadle so that the locking bar 20 withdraws the supports 23 from beneath the step rails and at the same time disengages the pawl 36 of the traverse motion from the ratchet wheel; (4) he I lowers the driven friction pulley 51 so as to reverse the doffing shaft 12 and to lower the builder rails 11 and the step rails 6. Thefull bobbins '30 descend with the builder rails 11." When empty bobbins are substituted for full bobbins, the driven friction pulley 51 is raised and the dofiing shaft 12 lifts the rails until the step rails are high enough to allow the locking bar to slide automatically until the supports 23 are below the step rails. At the same time the pawl 36 islowered'on to the ratchet wheel 37. The worm 44 is lowered outrofit were a multi-part rail movable as a unit.

llO

- operative relation with doffing shaft 12 and I Having now particularly described and:

ascertained the nature of our said invention,

and in what manner the same'is to be per-v formed, we declare that what we claim is 1. In spinning, twisting, and like frames,

a flier drive shaft, fast and loose belt pulleys thereon, a doffing shaft, and means for I p 120 Soalso the operatively connecting the dofiing shaft with the loose pulley to rotate the shaft for dofiing during the halt of the flier drive.

2. In spinning, twisting, and like frames, a flier drive shaft, fast and loose belt pulleys thereon, a builder rail, and means operatively connecting the builder rail and loose pulley to lower and lift the builder rail on dofling andresetting the frame during the halt of the flier drive shaft.

3. In spinning, twisting, and like frames, a flier drive shaft, fast and loose belt pulleys thereon, a dofiing shaft, a builder rail connected thereto, a worm wheel on the clefting shaft, a worm adapted to be brought into mesh therewith, and means for driving said worm from the loose pulley to rotate the dofling shaft.v

, 4. In spinning, twisting, and like frames, a flier drive shaft, fast and loose belt pulleys thereonfa doffing shaft, a builder rail con nected thereto, a worm wheel on the cloning shaft, a wormv adapted to be brought into mesh therewith, and means for driving said worm in opposite directions from the loose pulley to lower and lift the builder rail.

' 5. In spinning, twisting, and like frames,

a flier drive shaft, fast and loose belt pulleys thereon, a dofiing shaft, a builder rail connected thereto, a worm wheel on the doffing shaft, a worm adapted to be brought.

into mesh therewith, and means for driving said worm from the loose'pulley to rotate the dofiing shaft, said means comprising a friction pulley operatively connected to the driving worm, a pair-of cooperating friction pulleys driven by the loose belt pulley, and means for shifting the fri'ction pulley connectedto the worm into engagement with one-or the other of said driven pulleys to rotate the worm in opposite directions.

6. In spinning,twisting, and like frames, I

la spinning spindle, means at the upper end thereof for suspending the same, a step rail detachably engaging the lower end of said spindle, a builder rail arranged above the step rail, a dofiing shaft, chains connecting thesame to the builder rail, and means for imparting a traverse motion to saiddofling shaft to operate'the builder rail during the spinning, in combination with means for lowering the builder and step rails to permit dofling from the lower ends of thespindle, and means for raising thebuilder rail,

and with it the step rail, into operativeposition with relation to the spindle, said step rail being supported by the builder rail on said resettingmovement, and said means operat'ing through the builder rail, chains and .dofling shaft.

7 s indie 7. In spinning,-twisting, and likeframes, a spinning spindle, meansat the upper end thereof for suspending the same, a step rail movable out of engagement with the lower end of the spindleto permit doffing'at said end, means for lifting the step rail and means operated from one end of the frame and engaging said railin its-lifted position .to'hold it in engagement with the lower end .of the. spindle during the spinnin operation.

8. In spinning, twisting, and" ike frames, a spinning spindle, means at theupper end thereof for suspending the same, a step rail movable out of engagementwith the. lower end of the spindle to permit dofling at said end, means for lifting the step rail and means operated from one end of the frame and engaging the under side ofsaid rail in its lifted position to hold it in engagement. with the lower end. of the spindle during the tion, means for lifting the step rail to spindle-engaging position, independent means for supporting the step rallfduring said spinning operation, and means for removing said support and simultaneously breaking the traverse motion; connection to the dofling spindle to drop below the'lower end of the spinning for dofling the latter.

.10. In a spinning, twisting, and like -.fran1e, a spinning spindle, means at its upper end for suspending the same, a step rail detachabl. en agin the'lower end of the spindle during the spinning operation but movable downwardly to permitdoffing from to permit the builder and step rails said end,in combination with a flier on said. a

spindle, means for supporting the. spindle above the flier and below the top suspension for the spindle to maintain the latter in-sub stantially normal position when disengaged from the step rail.

In testimony whereof. we have signed our names to this specificat on, 1n the presence of two subscriblng witnesses. 1

" T. A1 BOYD-. H. ApBOYD.

Witnesses: 4

JAS. It. ROBERTSON,

JAMES CUNNINGHAM, 

